UL 6500 ISBN Audio/Video and Musical Instrument Apparatus for Household, Commercial, and Similar General Use

Transcription

1 UL 6500 ISBN Audio/Video and Musical Instrument Apparatus for Household, Commercial, and Similar General Use

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3 JUNE 23, 2000 UL 6500 tr1 Underwriters Laboratories Inc. (UL) 333 Pfingsten Road Northbrook, IL UL Standard for Safety for Audio/Video and Musical Instrument Apparatus for Household, Commercial, and Similar General Use, UL 6500 Second Edition, Dated September 30, 1999 Revisions: This Standard contains revisions through and including June 23, The new and/or revised requirements are substantially in accordance with UL s Bulletin(s) on this subject dated February 14, The bulletin(s) is now obsolete and may be discarded. UL is in the process of converting its Standards for Safety to the Standard Generalized Markup Language (SGML), and implementing an SGML compliant document management and publishing system. SGML - an international standard (ISO ) - is a descriptive markup language that describes a document s structure and purpose, rather than its physical appearance on a page. Significant benefits that will result from UL s use of SGML and these new systems include increased productivity, reduced turnaround times, and data and information consistency, reusability, shareability, and portability. However, the fonts, pagination, and general formatting of UL s new electronic publishing system differ from that of UL s previous publishing system. Consequently, when revision pages are issued for a Standard with the new publishing system, these differences may result in the printing of pages on which no requirements have been changed - these additional pages result from relocation of text due to repagination and reformatting of the Standard with the new publishing system. Text that has been changed in any manner is marked with a vertical line in the margin. Changes in requirements are marked with a vertical line in the margin and are followed by an effective date note indicating the date of publication or the date on which the changed requirement becomes effective. The following table lists the future effective dates with the corresponding item. Future Effective Dates January 31, 2003 References 19, 19.1, , , R.21.1 Tables R1, R1A, R1B The revisions dated June 23, 2000 include a reprinted title page (page1) for this Standard. The master for this Standard at UL s Northbrook Office is the official document insofar as it relates to a UL service and the compliance of a product with respect to the requirements for that product and service, or if there are questions regarding the accuracy of this Standard. UL s Standards for Safety are copyrighted by UL. Neither a printed copy of a Standard, nor the distribution diskette for a Standard-on-Diskette and the file for the Standard on the distribution diskette should be altered in any way. All of UL s Standards and all copyrights, ownerships, and rights regarding those Standards shall remain the sole and exclusive property of UL. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form by any means, electronic, mechanical photocopying, recording, or otherwise without prior permission of UL.

4 tr2 JUNE 23, 2000 UL 6500 Revisions of UL Standards for Safety are issued from time to time. A UL Standard for Safety is current only if it incorporates the most recently adopted revisions. UL provides this Standard as is without warranty of any kind, either expressed or implied, including but not limited to, the implied warranties of merchantability or fitness for any purpose. In no event will UL be liable for any special, incidental, consequential, indirect or similar damages, including loss of profits, lost savings, loss of data, or any other damages arising out of the use of or the inability to use this Standard, even if UL or an authorized UL representative has been advised of the possibility of such damage. In no event shall UL s liability for any damage ever exceed the price paid for this Standard, regardless of the form of the claim. UL will attempt to answer support requests concerning electronic versions of its Standards. However, this support service is offered on a reasonable efforts basis only, and UL may not be able to resolve every support request. UL supports the electronic versions of its Standards only if they are used under the conditions and operating systems for which it is intended. UL s support policies may change from time-to-time without notification. UL reserves the right to change the format, presentation, file types and formats, delivery methods and formats, and the like of both its printed and electronic Standards without prior notice. Purchasers of the electronic versions of UL s Standards for Safety agree to defend, indemnify, and hold UL harmless from and against any loss, expense, liability, damage, claim, or judgement (including reasonable attorney s fees) resulting from any error or deviation introduced while purchaser is storing an electronic Standard on the purchaser s computer system. If a single-user version electronic Standard was purchased, one copy of this Standard may be stored on the hard disk of a single personal computer, or on a single LAN file-server or the permanent storage device of a multiple-user computer in such a manner that this Standard may only be accessed by one user at a time and for which there is no possibility of multiple concurrent access. If a multiple-user version electronic Standard was purchased, one copy of the Standard may be stored on a single LAN file-server, or on the permanent storage device of a multiple-user computer, or on an Intranet server. The number of concurrent users shall not exceed the number of users authorized. Electronic Standards are intended for on-line use, such as for viewing the requirements of a Standard, conducting a word search, and the like. Only one copy of the Standard may be printed from each single-user version of an electronic Standard. Only one copy of the Standard may be printed for each authorized user of a multiple-user version of an electronic Standard. Because of differences in the computer/software/printer setup used by UL and those of electronic Standards purchasers, the printed copy obtained by a purchaser may not look exactly like the on-line screen view or the printed Standard. An employee of an organization purchasing a UL Standard can make a copy of the page or pages being viewed for their own fair and/or practical internal use. The requirements in this Standard are now in effect, except for those paragraphs, sections, tables, figures, and/or other elements of the Standard having future effective dates as indicated in the note following the affected item. The prior text for requirements that have been revised and that have a future effective date are located after the Standard, and are preceded by a SUPERSEDED REQUIREMENTS notice. New product submittals made prior to a specified future effective date will be judged under all of the requirements in this Standard including those requirements with a specified future effective date, unless the applicant specifically requests that the product be judged under the current requirements. However, if

5 JUNE 23, 2000 UL 6500 tr3 the applicant elects this option, it should be noted that compliance with all the requirements in this Standard will be required as a condition of continued Listing, Recognition and Follow-Up Services after the effective date, and understanding of this should be signified in writing. Copyright 2000 Underwriters Laboratories Inc.

6 tr4 JUNE 23, 2000 UL 6500 This Standard consists of pages dated as shown in the following checklist: Page Date 1-4B...June 23, September 30, B... June 23, September 30, B... June 23, September 30, June 23, September 30, B... June 23, September 30, B... June 23, September 30, B... June 23, September 30, B... June 23, September 30, June 23, September 30, B... June 23, September 30, June 23, September 30, June 23, September 30, B... June 23, September 30, June 23, September 30, June 23, September 30, June 23, September 30, 1999 A1-A2... September 30, 1999 B1-B4... September 30, 1999 C1-C2... September 30, 1999 D1-D2... September 30, 1999 E1-E6... September 30, 1999 F1-F2... September 30, 1999 G1-G4... September 30, 1999 H1-H8... September 30, 1999 I1-I4... September 30, 1999 J1-J2... September 30, 1999 K1-K6... September 30, 1999 L1-L4... September 30, 1999 M1-M4... September 30, 1999 N1-N4... September 30, 1999 O1-O2... September 30, 1999 P1-P2... September 30, 1999 Q1-Q2... September 30, 1999

7 JUNE 23, 2000 UL 6500 tr5 R1-R2... June 23, 2000 R3-R6... September 30, 1999 S1-S2... June 23, 2000 SR1-SR4... June 23, 2000

8 tr6 JUNE 23, 2000 UL 6500 No Text on This Page

9 SEPTEMBER 30, 1999 (Title Page Reprinted: June 23, 2000) 1 UL 6500 Standard for Audio/Video and Musical Instrument Apparatus for Household, Commercial, and Similar General Use First Edition May, 1996 Second Edition September 30, 1999 An effective date included as a note immediately following certain requirements is one established by Underwriters Laboratories Inc. Revisions of this Standard will be made by issuing revised or additional pages bearing their date of issue. A UL Standard is current only if it incorporates the most recently adopted revisions, all of which are itemized on the transmittal notice that accompanies the latest set of revised requirements. ISBN COPYRIGHT 1996, 2000 UNDERWRITERS LABORATORIES INC.

10 2 UL 6500 JUNE 23, 2000 No Text on This Page

11 JUNE 23, 2000 UL CONTENTS UL PREFACE...7 Foreword (UL)...8 DEVIATIONS...9 FOREWORD...10 INTRODUCTION General Scope Normative references Definitions Definitions in alphabetical order Types of apparatus Ratings and electrical values Supply and external connections Signals, sources, loads Protection against electric shock, insulations Components Miscellaneous General requirements General test conditions Conduct of tests Normal operating conditions Fault conditions Markings and instructions Identification and supply ratings TERMINALS Instructions...40A 6 Hazardous radiations Ionizing radiation Laser radiation Heating under normal operating conditions General Heat resistance of insulating material Constructional requirements with regard to the protection against electric shock Electric shock hazard under normal operating conditions Testing on the outside Removal of protective covers Insulation requirements Surge test Humidity treatment Insulation resistance and dielectric strength Fault conditions Electric shock hazard Heating Mechanical strength Complete apparatus...67

12 4 UL 6500 JUNE 23, Fixing of actuating elements REMOTE CONTROL devices held in hand Drawers Antenna coaxial sockets mounted on the apparatus Telescoping or rod antenna Wall or ceiling mounting means CLEARANCES and CREEPAGE DISTANCES General CLEARANCES and CREEPAGE DISTANCES: dimensions Components Resistors Capacitors and RC-units Inductors and windings High voltage components and assemblies Protective devices Switches SAFETY INTERLOCKS Voltage setting devices and the like Motors Batteries Optocouplers TERMINALS Plugs and sockets Provisions for protective earthing TERMINALS for external flexible cords and for permanent connection to the MAINS supply Devices forming a part of the MAINS plug External flexible cords Electrical connections and mechanical fixings Mechanical strength of picture tubes and protection against the effects of implosion Intrinsically protected picture tubes, including those having integral protective screens Non-intrinsically protected picture tubes Stability and mechanical hazards Fragmentation test Rack mounting test Resistance to fire Electrical components and mechanical parts Fire enclosure Annex A (normative) Additional requirements for apparatus with protection against splashing water for outdoor use and wet locations A.5 Marking and instructions 1)...A1 A General...A1 A.10 Insulation requirements...a2

13 JUNE 23, 2000 UL A Annex B (normative) Apparatus to be connected to the TELECOMMUNICATION NETWORKS B.2 Definitions 1)...B1 B.5 Marking and instructions...b1 B.8 Constructional requirements with regard to protection against electric shock...b2 B.9 Electric shock hazard under normal operating conditions...b2

14 4B UL 6500 JUNE 23, 2000 No Text on This Page

15 SEPTEMBER 30, 1999 UL B.10 Insulation requirements...b3 B.14 Components...B3 Annex C (normative) Band-pass filter for wide-band noise measurement (Extract of IEC ) Annex D (normative) Measuring network for TOUCH CURRENTS Annex E (normative) Measurement of CLEARANCES and CREEPAGE DISTANCES Annex F (normative) Table of electrochemical potentials Annex G DC (normative) Flammability test methods Annex H DU (normative) Safety requirements for video apparatus for use in health care facilities Annex I DU (normative) Safety requirements for undercabinet apparatus Annex J DU (normative) Safety requirements for in-wall mounted apparatus Annex K DU (normative) Safety requirements for apparatus with projection lamps Annex L DU (normative) Safety requirements for permanently connected apparatus Annex M DU (normative) Safety requirements for carts, stands, and similar apparatus for use with specific apparatus covered by this standard M.19 Mechanical stability...m3 Annex N (informative) ROUTINE TEST N.1 Tests during the production process...n1 N.2 Tests at the end of the production process...n2

16 6 UL 6500 SEPTEMBER 30, 1999 Annex O DE Reserved for future use Annex P (informative) Bibliography Annex Q DU (informative) A 0.02-ohm shunt for use in the peak inrush-current measurement described in Annex R DU (normative) Manufacturing and production-line tests and verifications Annex S DC (normative) Standards for components

17 SEPTEMBER 30, 1999 UL UL PREFACE This UL Standard is based on IEC Publication 60065: sixth edition, Safety of Audio, video and similar electronic apparatus Safety Requirements. IEC publication is copyrighted by the IEC. The text, figures and tables of IEC Publication Safety of Audio, video and similar electronic apparatus Safety Requirements, 60065, copyright 1998, are used in this Standard with the consent of the IEC and the American National Standards Institute (ANSI). The IEC copyrighted material has been reproduced with permission from ANSI. ANSI should be contacted regarding the reproduction of any portion of the IEC material. The IEC Foreword and Introduction are not part of the requirements of the Standard but are included for information purposes only. Copies of IEC Publication may be purchased from ANSI, 11 West 42nd Street, New York, New York, 10036, (212) Note Although the intended primary application of this Standard is stated in its Scope, it is important to note that it remains the responsibility of the users of the Standard to judge its suitability for their particular purpose.

18 8 UL 6500 SEPTEMBER 30, 1999 Foreword (UL) A. This Standard contains basic requirements for products covered by Underwriters Laboratories Inc. (UL) under its Follow-Up Service for this category within the limitations given below and in the Scope section of this Standard. These requirements are based upon sound engineering principles, research, records of tests and field experience, and an appreciation of the problems of manufacture, installation, and use derived from consultation with and information obtained from manufacturers, users, inspection authorities, and others having specialized experience. They are subject to revision as further experience and investigation may show is necessary or desirable. B. The observance of the requirements of this Standard by a manufacturer is one of the conditions of the continued coverage of the manufacturer s product. C. A product which complies with the text of this Standard will not necessarily be judged to comply with the Standard if, when examined and tested, it is found to have other features which impair the level of safety contemplated by these requirements. D. A product employing materials or having forms of construction which conflict with specific requirements of the Standard cannot be judged to comply with the Standard. A product employing materials or having forms of construction not addressed by this Standard may be examined and tested according to the intent of the requirements and, if found to meet the intent of this Standard, may be judged to comply with the Standard. E. UL, in performing its functions in accordance with its objectives, does not assume or undertake to discharge any responsibility of the manufacturer or any other party. The opinions and findings of UL represent its professional judgment given with due consideration to the necessary limitations of practical operation and state of the art at the time the Standard is processed. UL shall not be responsible to anyone for the use of or reliance upon this Standard by anyone. UL shall not incur any obligation or liability for damages, including consequential damages, arising out of or in connection with the use, interpretation of, or reliance upon this Standard. F. Many tests required by the Standards of UL are inherently hazardous and adequate safeguards for personnel and property shall be employed in conducting such tests.

19 SEPTEMBER 30, 1999 UL DEVIATIONS GENERAL Deviations from the text of International Electrotechnical Commission (IEC) Publication 60065, Audio, video and similar electronic apparatus Safety Requirements, copyright 1998 are indicated by notations next to the clause, sub-clause, Table, Figure or Annex number. There are basically four types of deviations: DR Deviations based on the National Electrical Code (NEC) and other U.S. Regulatory Requirements. DU Deviations based on Basic Safety Principles and safety practices: These are deviations which are either 1) based on basic safety principles and requirements, elimination of which would compromise safety for U.S. consumers, or 2) deviations for IEC requirements that may be acceptable, but adopting the IEC requirements would require considerable retesting or redesign on the manufacturer s part. DC Deviations based on component standards: These are deviations based on the component standards and will not be deleted until a particular component standard is harmonized with the IEC component standard. DE Deviations based on absolute statements or editorial corrections. Deviations have been incorporated into the body of the standard. If deviations necessitate the deletion of the IEC text, the IEC text has been retained but has been lined-out. Text added as a result of deviations has been underlined. Text added as the UL Preface and UL Foreword is not underlined.

20 10 UL 6500 SEPTEMBER 30, 1999 INTERNATIONAL ELECTROTECHNICAL COMMISSION AUDIO, VIDEO AND SIMILAR ELECTRONIC APPARATUS SAFETY REQUIREMENTS FOREWORD 1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of the IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, the IEC publishes International Standards. Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, governmental and non-governmental organizations liaising with the IEC also participate in this preparation. The IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of the IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has representation from all interested National Committees. 3) The documents produced have the form of recommendations for international use and are published in the form of standards, technical reports or guides and they are accepted by the National Committees in that sense. 4) In order to promote international unification, IEC National Committees undertake to apply IEC International Standards transparently to the maximum extent possible in their national and regional standards. Any divergence between the IEC Standard and the corresponding national or regional standard shall be clearly indicated in the latter. 5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment declared to be in conformity with one of its standards. 6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC has been prepared by IEC technical committee 92: Safety of audio, video and similar electronic equipment. This sixth edition cancels and replaces the fifth edition published in 1985, its amendments 1 (1987), 2 (1989) and 3 (1992). This edition constitutes a technical revision. It has the status of a group safety publication in accordance with IEC Guide 104. The text of this standard is based on the following documents:

21 SEPTEMBER 30, 1999 UL FDIS 92/60/FDIS Report on voting 92/61/RVD Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. In this standard, the following print types are used requirements proper: roman type test specifications: italic type NOTES: smaller roman type For terms defined in clause 2, SMALL CAPITALS are used. Annexes A, B, C, D, E, F and G form an integral part of this standard. Annexes N and P are for information only.

22 12 UL 6500 SEPTEMBER 30, 1999 INTRODUCTION Principles of safety General This introduction is intended to provide an appreciation of the principles on which the requirements of this standard are based. Such an understanding is essential in order that safe apparatus can be designed and manufactured. The requirements of this standard are intended to provide protection to persons as well as to the surroundings of the apparatus. Attention is drawn to the principle that the requirements, which are standardized, are the minimum considered necessary to establish a satisfactory level of safety. Further development in techniques and technologies may entail the need for future modification of this standard. Hazards NOTE The expression protection to the surroundings of the apparatus implies that this protection should also include protection of the natural environment in which the apparatus is intended to be used, taking into account the life cycle of the apparatus, i.e. manufacturing, use, maintenance, disposal and possible end-of-life recycling of parts of the apparatus. The application of this standard is intended to prevent injury or damage due to the following hazards: electric shock; excessive temperatures; radiation; implosion; mechanical hazards; fire. Electric shock Electric shock is due to current passing through the human body. Currents of the order of a milliampere can cause a reaction in persons in good health and may cause secondary risks due to involuntary reaction. Higher currents can have more damaging effects. Voltages below certain limits are generally regarded as not dangerous under specified conditions. In order to provide protection against the possibility of higher voltages appearing on parts which may be touched or handled, such parts are either earthed or adequately insulated. For parts which can be touched, two levels of protection are normally provided to prevent electric shock caused by a fault. Thus a single fault and any consequential faults will not create a hazard. The provision of additional protective measures, such as supplementary insulation or protective earthing, is not

23 SEPTEMBER 30, 1999 UL considered a substitute for, or a relief from, properly designed basic insulation. Cause Contact with parts normally at hazardous voltage Prevention Prevent access to parts at hazardous voltage by fixed or locked covers, interlocks, etc. Discharge capacitors at hazardous voltages. Breakdown of insulation between parts normally at hazardous voltage and accessible parts. Either use double or reinforced insulation between parts normally at hazardous voltages and accessible parts so that breakdown is not likely to occur, or connect accessible conductive parts to protective earth so that the voltage which can develop is limited to a safe value. The insulations shall have adequate mechanical and electrical strength. Breakdown of insulation between parts normally at hazardous voltage and circuits normally at non- hazardous voltages, thereby putting accessible parts and terminals at hazardous voltage. Segregate hazardous and non-hazardous voltage circuits either by double or reinforced insulation so that breakdown is not likely to occur, or by a protective earthed screen, or connect the circuit normally at non-hazardous voltage to protective earth, so that the voltage which can develop is limited to a safe value. Touch current from parts at hazardous voltage through the human body. (Touch current can include current due to RFI filter components connected between mains supply circuits and accessible parts or terminals.) Excessive temperatures Limit touch current to a safe value or provide protective earth connection to the accessible parts. Requirements are included to prevent injury due to excessive temperatures of accessible parts, to prevent damaging of insulation due to excessive internal temperatures, and to prevent mechanical instability due to excessive temperatures developed inside the apparatus. Radiation Requirements are included to prevent injury due to excessive energy levels of ionizing and laser radiation, for example by limiting the radiation to non-hazardous values. Implosion Requirements are included to prevent injury due to implosion of picture tubes. Mechanical hazards Requirements are included to ensure that the apparatus and its parts have adequate mechanical strength and stability, to avoid the presence of sharp edges and to provide guarding or interlocking of dangerous moving parts. Fire A fire can result from: overloads; component failure;

24 14 UL 6500 SEPTEMBER 30, 1999 insulation breakdown; bad connections; arcing. Requirements are included to prevent any fire which originates within the apparatus from spreading beyond the immediate vicinity of the source of the fire or from causing damage to the surroundings of the apparatus. The following preventive measures are recommended: the use of suitable components and sub-assemblies; the avoidance of excessive temperatures which might cause ignition under normal or fault conditions; the use of measures to eliminate potential ignition sources such as inadequate contacts, bad connections, interruptions; the limitation of the quantity of combustible material used; the control of the position of combustible materials in relation to potential ignition sources; the use of materials with high resistance to fire in the vicinity of potential ignition sources; the use of encapsulation or barriers to limit the spread of fire within the apparatus; the use of suitable fire retardant materials for the enclosure.

25 SEPTEMBER 30, 1999 UL AUDIO, VIDEO AND SIMILAR ELECTRONIC APPARATUS SAFETY REQUIREMENTS 1 General 1.1 Scope DU This International Standard applies to electronic apparatus designed to be fed from the MAINS or from a SUPPLY APPARATUS and intended for reception, generation, recording or reproduction respectively of audio, video and associated signals. It also applies to apparatus designed to be used exclusively in combination with the above mentioned apparatus. This standard concerns only safety aspects of the above apparatus; it does not concern other matters, such as style or performance. For above-mentioned apparatus, which are fed from a supply source other than the MAINS or from a SUPPLY APPARATUS, and which contain a LASER SYSTEM or produce an internal OPERATING VOLTAGE greater than 4000 V (peak), this standard applies as far as applicable. NOTE1 InAustralia, Canada, Denmark, Japan, Rumania, South Africa, United States of America and United Kingdom this standard is, where relevant, used as a guide for the testing of battery operated apparatus. This standard applies to the above-mentioned apparatus, if it is designed to be connected to the TELECOMMUNICATION NETWORK or similar network, for example by means of an integrated modem. Some examples of apparatus within the scope of this standard are: receiving apparatus and amplifiers for sound and/or vision; independent LOAD TRANSDUCERS and SOURCE TRANSDUCERS; SUPPLY APPARATUS intended to supply other apparatus covered by the scope of this standard; ELECTRONIC MUSICAL INSTRUMENTS, and electronic accessories such as rhythm generators, tone generators, music tuners and the like for use with electronic or non-electronic musical instruments; audio and/or video educational apparatus; video projectors; video cameras and video monitors; household video games and flipper games; NOTE 2 Video and flipper games for commercial use are covered by IEC [7] * UL 22 juke boxes; * Figures in square brackets refer to the bibliography given in annex P.

26 16 UL 6500 SEPTEMBER 30, 1999 household electronic gaming and scoring machines; NOTE 3 Electronic gaming and scoring machines for commercial use are covered by IEC [7] UL 22 teletext equipment; record and optical disc players; tape and optical disc recorders; antenna signal converters and amplifiers; satellite receiver antenna positioners; Citizen s Band apparatus; apparatus for IMAGERY; light effect apparatus; intercommunication apparatus, using low voltage MAINS as the transmission medium. video apparatus intended for entertainment purposes in health-care facilities; cellular phones, wireless modems, and similar transceiving devices; audio or video apparatus that are used with a battery supply. MAINS connected apparatus covered by this standard is intended for installation in compliance with the National Electrical Code, ANSI/NFPA 70. Any undated reference to a code or a standard appearing in the requirements of this standard shall be interpreted as referring to the latest edition of that code or standard This standard applies to apparatus with a RATED SUPPLY VOLTAGE not exceeding: 250 V a.c. single phase or d.c. supply, 433 V a.c. in the case of apparatus for connection to a supply other than single phase.

27 JUNE 23, 2000 UL DU This standard applies to apparatus for use at altitudes not exceeding 2000 m above sea level, primarily in dry locations and in regions with moderate or tropical climates. For apparatus with protection against splashing water intended for outdoor use, additional requirements are given in annex A. For apparatus to be connected to TELECOMMUNICATION NETWORKS, additional requirements are given in annex B. For apparatus intended to be used in vehicles, ships or aircraft, or at altitudes exceeding 2000 m above sea level, additional requirements may be necessary. Requirements, additional to those specified in this standard, may be necessary for apparatus intended for special conditions of use For apparatus designed to be fed from the MAINS, this standard applies to apparatus intended to be connected to a MAINS supply with transient overvoltages not exceeding overvoltage category II according to IEC For apparatus subject to transient overvoltages exceeding those for overvoltage category II, additional protection may be necessary in the MAINS supply of the apparatus This standard does not apply to the following apparatus, except where this standard is referenced in the relevant standard: apparatus falling within the scope of IEC 60950, dictation apparatus, projectors not mentioned in 1.1.1, for example film projectors, slide projectors, overhead projectors, epidiascopes. (See IEC [6].) DU Certain apparatus covered by the requirements in this standard are also required to comply with applicable requirements in other appropriate standards because of their intended end use applications or environmental conditions. An apparatus that contains features, characteristics, components, materials, or systems new or different from those covered by the requirements in this standard, that involves a risk of fire or of electric shock or injury to persons shall be evaluated using appropriate additional component and end-product requirements to maintain the level of safety as originally anticipated by the intent of this standard. An apparatus whose features, characteristics, components, materials, or systems conflict with specific requirements or provisions of this standard does not comply with this standard. Revision of requirements shall be proposed and adopted in conformance with the methods employed for development, revision, and implementation of this standard revised June 23, DC Normative references 1.2 revised June 23, 2000 The following normative documents contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All normative documents are subject to revision, and parties to agreements based on this International

28 18 UL 6500 JUNE 23, 2000 Standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. IEC (all parts), Letter symbols to be used in electrical technology IEC 60038:1983, IEC standard voltages IEC :1969, Environmental testing Part 2: Tests Test Ca: Damp heat, steady state IEC :1995, Environmental testing Part 2: Tests Test Fc: Vibration (sinusoidal) IEC :1975, Environmental testing Part 2: Tests Test Ed: Free fall (Procedure 1) IEC :1997, Environmental testing Part 2-75: Tests Test Eh: Hammer tests IEC 60085:1984, Thermal evaluation and classification of electrical insulation IEC 60112:1979, Method for determining the comparative and the proof tracking indices of solid insulating materials under moist conditions IEC (all parts), Miniature fuses IEC 60167:1964, Methods of test for the determination of the insulation resistance of solid insulating materials IEC (all parts), Polyvinyl chloride insulated cables of rated voltages up to and including 450/750 V IEC (all parts), Rubber insulated cables Rated voltages up to and including 450/750 V IEC (all specifications), Base materials for printed circuits Part 2: Specifications IEC :1985, Sound system equipment Part 1: General IEC (all parts), Specifications for particular types of winding wires IEC (all parts), Appliance couplers for household and similar general purposes IEC :1991, Safety of household and similar electrical appliances Part 1: General requirements IEC :1982, Fixed capacitors for use in electronic equipment Part 1: Generic specification IEC :1993, Fixed capacitors for use in electronic equipment Part 14: Sectional specification: Fixed capacitors for electromagnetic interference suppression and connection to the supply mains. Amendment 1 (1995) IEC (all parts), Graphical symbols for use on equipment, Index, survey and compilation of single sheets IEC (all parts), Specifications for pressure-sensitive adhesive tapes for electrical purposes IEC 60529:1989, Degrees of protection provided by enclosures (IP Code)

29 JUNE 23, 2000 UL A IEC 60536:1976, Classification of electrical and electronic equipment with regard to protection against electric shock

30 18B UL 6500 JUNE 23, 2000 No Text on This Page

31 SEPTEMBER 30, 1999 UL IEC :1992, Insulation coordination for equipment within low-voltage systems Part 1: Principles, requirements and tests IEC :1992, Insulation coordination for equipment within low-voltage systems Part 3: Use of coatings to achieve insulation coordination of printed board assemblies IEC 60691:1993, Thermal-links Requirements and application guide IEC :1991, Fire hazard testing Part 2: Test methods Section 2: Needle flame test IEC 60707:1981, Methods of test for the determination of the flammability of solid electrical insulating materials when exposed to an igniting source IEC (all parts), Automatic electrical controls for household and similar use IEC (all parts), Directly heated positive step-function temperature coefficient thermistors IEC :1993, Safety of laser products Part 1: Equipment classification, requirements and user s guide IEC (all parts), Plugs and socket-outlets for household and similar purposes IEC :1987, Electrical test methods for electric cables Part 1: Electrical tests for cables, cords and wires for voltages up to and including 450/750 V IEC (all parts), IEC system of plugs and socket-outlets for household and similar purposes IEC 60950:1991, Safety of information technology equipment IEC 60990:1990, Methods of measurements of touch-current and protective conductor current IEC :1991, Connecting devices for low voltage circuits for household and similar purposes Part 2-2: Particular requirements for connecting devices as separate entities with screwless-type clamping units IEC 60999:1990, Connecting devices Safety requirements for screw-type and screwless-type clamping units for electrical copper conductors IEC 61032:1990, Test probes to verify protection by enclosures IEC :1996, Switches for appliances Part 1: General requirements IEC 61149:1995, Guide for safe handling and operation of mobile radio equipment IEC 61260:1995, Electroacoustics Octave-band and fractional-octave-band filters IEC 61293:1994, Marking of electrical equipment with ratings related to electrical supply Safety requirements ISO 261:1973, ISO general purpose metric screw threads General plan ISO 262:1973, ISO general purpose metric screw threads Selected sizes for screws, bolts and nuts

32 20 UL 6500 JUNE 23, 2000 ISO 306:1994, Plastics Thermoplastic materials Determination of Vicat softening temperature (VST) ISO 7000:1989, Graphical symbols for use on equipment Index and synopsis UL 50, Enclosures for Electrical Equipment UL 94, Tests for Flammability of Plastic Materials for Parts in Devices and Appliances UL 224, Extruded Insulating Tubing UL , Low Voltage Fuses Part 14: Supplemental Fuses UL 508, Industrial Control Equipment UL 510, Polyvinyl Chloride, Polyethylene and Rubber Insulating Tape UL 746B, Polymeric Materials Long Term Property Evaluations UL 746C, Polymeric Materials Use in Electrical Equipment Evaluations UL 746D, Polymeric Materials Fabricated Parts UL 796, Printed Wiring Boards UL 817, Cord Sets and Power-Supply Cords UL 873, Temperature-Indicating and -Regulating Equipment UL 1020, Thermal Cutoffs for Use in Electrical Appliances and Components UL 1414, Across-The-Line, Antenna-Coupling, and Line-By-Pass Capacitors for Radio- and Television-Type Appliances UL 1416, Overcurrent and Overtemperature Protectors for Radio- and Television-Type Appliances UL 1417, Special Fuses for Radio- and Television-Type Appliances UL 1418, Cathode Ray Tubes UL 1434, Thermistor-Type Devices UL 1441, Coated Electrical Sleeving UL 1571, Incandescent Lightning Fixtures UL 1577, Optical Isolators UL 1950, Third Edition, Information Technology Equipment UL 2111, Overheating Protection for Motors UL , Automatic Electrical Controls for Household and Similar Use; Part 2: Particular Requirements for Temperature Sensing Controls

33 JUNE 23, 2000 UL A UL , Switches for Appliances

34 20B UL 6500 JUNE 23, 2000 No Text on This Page

35 SEPTEMBER 30, 1999 UL Definitions For the purpose of this International Standard, the following definitions apply. 2.1 DU Definitions in alphabetical order ACCESSIBLE ACCESSORY ALL-POLE MAINS SWITCH AUDIO AMPLIFIER AVAILABLE POWER BASIC INSULATION BY HAND CLASS I CLASS II CLEARANCE CONDUCTIVITY CONNECTED TO THE MAINS CONDUCTIVE PATTERN CREEPAGE DISTANCE DIRECTLY CONNECTED TO THE MAINS DOUBLE INSULATION ELECTRONIC MUSICAL INSTRUMENT FIRE ENCLOSURE HAZARDOUS LIVE IMAGERY INSTRUCTED PERSON ISOLATING TRANSFORMER LASER LASER SYSTEM LOAD TRANSDUCER MAINS MAJOR ENCLOSURE PART MANUALLY OPERATED MECHANICAL SWITCH MACRO-DISCONNECTION NOISE SIGNAL NON-CLIPPED OUTPUT POWER OPERATING VOLTAGE PERMANENTLY CONNECTED APPARATUS PINK NOISE PORTABLE APPARATUS POTENTIAL IGNITION SOURCE PRINTED BOARD PROTECTIVE EARTH TERMINAL PROTECTIVE SCREENING PROTECTIVE SEPARATION PTC-S THERMISTOR RATED CURRENT CONSUMPTION RATED LOAD IMPEDANCE RATED SUPPLY VOLTAGE REINFORCED INSULATION REMOTE CONTROL RIPPLE FREE ROUTINE TEST SAFETY INTERLOCK SEPARATING TRANSFORMER SKILLED PERSON SOURCE TRANSDUCER 2.5.3

36 22 UL 6500 SEPTEMBER 30, 1999 SPECIAL SUPPLY APPARATUS STAND-BY STATIONARY APPARATUS SUPPLEMENTARY INSULATION SUPPLY APPARATUS SUPPLY APPARATUS FOR GENERAL USE TELECOMMUNICATION NETWORK TERMINAL THERMAL CUT-OUT THERMAL LINK THERMAL RELEASE TOUCH CURRENT TRANSPORTABLE APPARATUS TRIP-FREE TYPE TEST USER WOOD-BASED MATERIAL Types of apparatus AUDIO AMPLIFIER either an independent audio signal amplifying apparatus or the audio signal amplifying part of an apparatus to which this standard applies ELECTRONIC MUSICAL INSTRUMENT electronic apparatus such as an electronic organ, electronic piano or music synthesizer that produces music under the control of the player SUPPLY APPARATUS apparatus which takes power from the MAINS and from which one or more other apparatus are fed SUPPLY APPARATUS FOR GENERAL USE SUPPLY APPARATUS which can be used without special measures not only for the supply of apparatus within the scope of this standard, but also for the supply of other appliances or devices, for example pocketcalculators SPECIAL SUPPLY APPARATUS SUPPLY APPARATUS which is designed to be used only for the supply of specified apparatus within the scope of this standard LASER SYSTEM LASER in combination with an appropriate laser energy source with or without additional incorporated components (see 3.44 of IEC )

37 SEPTEMBER 30, 1999 UL LASER device which can be made to produce or amplify electromagnetic radiation in the wavelength range from 180 nm to 1 mm primarily by the process of controlled stimulated emission (see 3.36 of IEC ) IMAGERY processing, editing, manipulation and/or storing of video signals REMOTE CONTROL controlling of an apparatus from a distance, for example mechanically, electrically, acoustically or by means of radiation PORTABLE APPARATUS specific apparatus designed to be carried easily BY HAND, the mass of which does not exceed 18 kg TRANSPORTABLE APPARATUS apparatus specifically designed to be moved frequently from place to place 2.3 Ratings and electrical values RATED SUPPLY VOLTAGE supply voltage or voltage range (for three-phase supply, the line-to-line voltage) for which the manufacturer has designed the apparatus OPERATING VOLTAGE highest voltage, non-repetitive transients being disregarded, to which the insulation under consideration is, or can be subjected when the apparatus is operating at its RATED SUPPLY VOLTAGE under normal operating conditions RIPPLE FREE d.c. voltage with a r.m.s. value of a ripple content of not more than 10% of the d.c. component. The maximum peak voltage does not exceed 140 V for a nominal 120 V ripple free d.c. system, and does not exceed 70 V for a nominal 60 V ripple free d.c. system NON-CLIPPED OUTPUT POWER sine-wave power dissipated in the RATED LOAD IMPEDANCE, measured at 1000 Hz at the onset of clipping on either one, or both peaks In cases where an amplifier is not intended for operation at 1000 Hz, a test frequency at the peak response shall be used RATED LOAD IMPEDANCE resistance, specified by the manufacturer, by which an output circuit should be terminated

38 24 UL 6500 SEPTEMBER 30, RATED CURRENT CONSUMPTION current consumption of an apparatus operating at its RATED SUPPLY VOLTAGE under normal operating conditions AVAILABLE POWER maximum power which can be drawn from the supplying circuit through a resistive load whose value is chosen to maximize the power for more than 2 min when the circuit supplied is disconnected (see figure 1) 2.4 Supply and external connections MAINS power source with a nominal voltage of more than 35 V (peak) a.c or d.c. which is not used solely to supply apparatus specified in PERMANENTLY CONNECTED APPARATUS apparatus which is intended for connection to the MAINS by a connection which cannot be loosened BY HAND DIRECTLY CONNECTED TO THE MAINS electrical connection with the MAINS in such a way that a connection to either pole of the MAINS causes in that connection a permanent current equal to or greater than 9 A, protective devices in the apparatus being not short-circuited NOTE A current of 9 A is chosen as the minimum breaking current of a 6 A fuse. CONDUCTIVELY CONNECTED TO THE MAINS electrical connection with the MAINS in such a way that a connection through a resistance of 2000 Ω to either pole of the MAINS causes in that resistance a permanent current greater than 0.7 ma (peak), the apparatus not being connected to earth TERMINAL part of an apparatus by which connection is made to external conductors or other apparatus. It may contain several contacts PROTECTIVE EARTH TERMINAL TERMINAL to which parts are connected which must be connected to earth for safety reasons

39 JUNE 23, 2000 UL TELECOMMUNICATION NETWORK metallically-terminated circuit intended to carry TELECOMMUNICATION SIGNALS for voice, data or other communication. Such networks may be publicly or privately owned. They may be subjected to overvoltages due to atmospheric discharges and power line failures Excluded are: NOTE It is assumed that adequate measures according to ITU-T Recommendation K.11 have been taken to reduce the risk that over-voltages presented to apparatus exceed 1.5 kv (peak). MAINS systems for supply, transmission and distribution of electrical power, used as telecommunication transmission medium; TV distribution systems using cable; public or private mobile radio systems; radio paging systems DU STATIONARY APPARATUS a cord and plug connected apparatus that is intended to be fastened in place or located in a dedicated space revised June 23, Signals, sources, loads PINK NOISE NOISE SIGNAL whose energy per unit bandwidth ( W/ f) is inversely proportional to frequency NOISE SIGNAL stationary random signal having normal probability distribution of instantaneous values. Unless otherwise stated, the mean value is zero SOURCE TRANSDUCER apparatus intended to convert the energy of a nonelectrical signal to electrical energy NOTE Examples are microphone, image sensor, magnetic reproducing head, laser-pickup LOAD TRANSDUCER apparatus intended to convert the energy of an electrical signal into another form of energy NOTE Examples are loudspeaker, picture tube, liquid crystal display, magnetic recording head.

40 26 UL 6500 SEPTEMBER 30, Protection against electric shock, insulations CLASS I design in which protection against electric shock does not rely on BASIC INSULATION only, but which includes an additional safety precaution in such a way that means are provided for the connection of ACCESSIBLE conductive parts to the protective (earthing) conductor in the fixed wiring of the installation, in such a way that ACCESSIBLE conductive parts cannot become HAZARDOUS LIVE in the event of a failure of the BASIC INSULATION (see 3.2 of IEC 60536) NOTE Such a design may have parts of CLASS II CLASS II design in which protection against electric shock does not rely on BASIC INSULATION only, but in which additional safety precautions, such as DOUBLE INSULATION or REINFORCED INSULATION, are provided, there being no provision for protective earthing or reliance upon installation conditions (see 3.3 of IEC 60536) BASIC INSULATION insulation applied to HAZARDOUS LIVE parts to provide basic protection against electric shock NOTE BASIC INSULATION does not necessarily include insulation used exclusively for functional purposes DOUBLE INSULATION insulation comprising both BASIC INSULATION and SUPPLEMENTARY INSULATION (see 2.3 of IEC 60536) SUPPLEMENTARY INSULATION independent insulation applied in addition to BASIC INSULATION in order to provide protection against electric shock in the event of a failure of the BASIC INSULATION (see 2.2 of IEC 60536) REINFORCED INSULATION single insulation applied to HAZARDOUS LIVE parts which provides a degree of protection against electric shock equivalent to DOUBLE INSULATION NOTE REINFORCED INSULATION may comprise several layers which cannot be tested singly as BASIC INSULATION or SUPPLEMENTARY INSULATION PROTECTIVE SEPARATION separation between circuits by means of basic and supplementary protection (BASIC INSULATION plus SUPPLEMENTARY INSULATION or plus PROTECTIVE SCREENING) or by an equivalent protective provision, for example REINFORCED INSULATION (see 2.9 of IEC ) PROTECTIVE SCREENING separation from HAZARDOUS LIVE parts by means of an interposed conductive screen, connected to the PROTECTIVE EARTH TERMINAL